Syphon elbow assembly



Jan. 24, 1956 A. E. ARMSTRONG SYFHON ELBOW ASSEMBLY Filed July 6, 1953INVENTOR ADAM E ARMSTRONG ATT( )RNEY United States Patent SYPHON ELBOWASSEMBLY Adam E. Armstrong, Three Rivers, Mich., assignor to The JohnsonCorporation, Three Rivers, Mich., a corporation of Michigan ApplicationJuly 6, 1953, Serial No. 366,353

1 Claim. (Cl. 285-110) This invention relates to improvements in syphonelbows and in particular to syphon elbows as employed in connection withpaper driers in which the syphon elbow has to be inserted through ajournal opening on a drying cylinder.

Syphon elbows are known which involve a pair of pivotally connected bodyparts carrying pipe sections which can be passed through a cylinderjournal opening in straight line arrangement and in which the pipesection which is introduced into the cylinder falls to the syphoningposition within the drum when the elbow joint, which forms the pivotalconnection of the two pipe sections passes beyond the inner end of thejournal opening.

It is an object of the invention to provide an improved elbow syphon ofthis known type in which provision is made for bringing the insertedpipe section to rest in an inclined position when it falls to itsoperative position and in which the opposed ends of the two pipesections are firmly seated with respect to one another when positioned.

it is a further object of the invention to provide an elbow syphon ofthe above type in which the weight of the pipe section holding the elbowbent also holds this section sealed against a seat on the other pipesection which is angularly disposed with respect to the axis of rotationof a cylinder, such as a paper drying cylinder, upon which the syphon isinstalled.

The above and further objects and advantages of the invention, residingin the construction, arrangement and combination of parts will appearclear from consideration of the following detail description of onepractical form of the invention, with reference to the accompanyingdrawings, and from the appended claim.

In the drawings:

Fig. 1 is a longitudinal section through an elbow syphon according tothe invention with the body parts shown in full lines in straight lineassembly for insertion into a drier or like drum and the left-hand bodypart being shown dotted in the position to which it falls and sealinglyseats with respect to the other body part when the elbow is bent intooperative position,

Fig. 2 is an underneath plan view of Fig. 1,

Fig. 3 is an end view looking on the left-hand end of Fig. 1.

Referring to the drawings, the syphon elbow illustrated thereincomprises two hollow body parts and 12 each having an interiorlyscrew-threaded bore 10, 12'. for the attachment of pipe sections 14 and16. These body parts are pivotally interconnected at 18, with thepivotal connection being conveniently efiected by a pivot pin secured inaligned holes in spaced apart arms of a fork on the body part 10 and asingle arm 22 on the other body part 12, this arm 22 being centrallylocated within the said fork and extending centrally from an inclinedand substantially semi-circular surface 24 on its body part 12.

The surface 24 is conveniently inclined at an angle of 30 degrees to thelongitudinal axis of its body 12 and has a circular hole 26 formedtherein, which hole may be fitted with a hardened sleeve 28 presenting atapered end 36 which projects beyond the surface 24.

The body part 10 has an end opening 32 eccentric to the bore 10 andarranged to seat upon the surface 30 when the part 10 is allowed to fallto its inclined position as seen in Fig. 1.

To install the joint the body parts are passed in axial alignment alongthe journal opening (not shown) on a drying cylinder or the like andwill remain thus until the pivot 18 leaves the journal upon entry of thepart 10 within the cylinder. Then the part 10 is no longer supported andwill drop by gravity to the inclined position with attendant firmseating of the opening 32 over the tapered seat 30 to form a leak-proofjoint.

Having thus disclosed my invention what I claim as novel and wish tosecure by Letters Patent is as follows:

A syphon elbow assembly comprising a pair of hollow cylindrical bodyparts of the same diameter having passageways therethrough and havingcoaxially recessed portions at opposite ends thereof for the connectionof pipe sections coaxially thereto, said body parts having pivotalinterconnecting means permitting said body parts to be swung into axialalignment with their outer contours defining a common cylindricalcontour, said pivotal interconnecting means lying wholly Within saidcommon cylindrical contour, one of said body parts having a first endface adjacent the other-of said body parts, said first end face having afirst opening therein of a diameter at least as great as the insidediameter of a said pipe section and communicating with the hollowinterior of said one body part, said first end face extending from saidpivotal interconnecting means away from said other body part and lyingwholly within said common cylindrical contour when said body parts areaxially aligned, said other body part having a second end face adjacentsaid one body part, said second end face having a second opening thereinof a diameter at least as great as the inside diameter of a said pipesection and communicating with the hollow interior and axially offsetfrom the axis of said other body part, said pivotal interconnectingmeans being connected to said second end face adjacent one side thereofand said second opening being disposed adjacent the other side thereofso that said pivotal connecting means and said second opening aredisposed adjacent opposite sides of said second end face, and sealingmeans disposed about one of said openings and projecting beyond itsassociated end face so that when said body parts are swung together saidopenings will be brought into registry and said sealing means willcomplete a closed fluid passageway through both said body parts.

References Cited in the file of this patent UNITED STATES PATENTS857,519 Foster June 18, 1907 1,483,455 Kraftv Feb. 12, 1924 2,000,087Meeker et a1 May 7, 1935

